Unit 5 Section Ⅱ（课件PPT）-【精讲精练】2026-2027学年高中英语选择性必修第一册（外研版）

该高中英语课件聚焦“过去完成时”语法及核心词汇blame、decline，通过“语法精讲+技能培养”等栏目导航，从构成、用法（含“过去的过去”、持续动作、未实现意图及固定句型）到与一般过去时对比，结合高考真题实例与即时演练，构建从基础到应用的学习支架。 其亮点在于融合语言能力（真题语境提升语法词汇运用）、思维品质（对比分析时态区别）、学习能力（分层练习巩固），如“no sooner…than”倒装句及“be to blame”短语练习，助力学生夯实基础提升应试，教师可高效开展语法词汇教学。

Section Ⅱ　Using language UNIT 5　Revealing nature 栏目导航 UNIT 5　Revealing nature 1 栏目导航 语法精讲•技能培养 01 核心知识•关键能力 02 随堂演练•巩固提升 03 课时作业•知能达标 04 栏目导航 UNIT 5　Revealing nature 1 语法精讲•技能培养 栏目导航 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 had given had moved 栏目导航 UNIT 5　Revealing nature 1 had hoped had visited had collected 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 had worked became rushed had done 栏目导航 UNIT 5　Revealing nature 1 核心知识•关键能力 栏目导航 栏目导航 UNIT 5　Revealing nature 1     栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 for to blame 栏目导航 UNIT 5　Revealing nature 1 blame your own failure on 栏目导航 UNIT 5　Revealing nature 1     栏目导航 UNIT 5　Revealing nature 1 栏目导航 UNIT 5　Revealing nature 1 to have by to on 栏目导航 UNIT 5　Revealing nature 1 have no alternative but to decline your invitation 栏目导航 UNIT 5　Revealing nature 1 随堂演练•巩固提升 栏目导航 栏目导航 UNIT 5　Revealing nature 1 had done had expected had scored were treated 栏目导航 UNIT 5　Revealing nature 1 interrupted had raised asked had rushed 栏目导航 UNIT 5　Revealing nature 1 had worked started 栏目导航 UNIT 5　Revealing nature 1 had taken part in an English speech contest they had started would fail had she stepped 栏目导航 UNIT 5　Revealing nature 1 whether he had seen her had received more than 200 letters 栏目导航 UNIT 5　Revealing nature 1 课时作业•知能达标 栏目导航 点击进入WORD 栏目导航 UNIT 5　Revealing nature 1 谢谢观看 栏目导航 UNIT 5　Revealing nature 1 一、过去完成时的构成和用法 1．构成：had＋过去分词 2．用法 (1)表示在过去某个时间或动作之前已经完成或结束的动作。句中常有by，by the end of等介词(短语) 和by the time，before，when，until等引导的状语从句，也可以通过一个表示过去的动作或上下文来表示。 ◆By nine o'clock last night，we had finished most of the work. 到昨晚9点钟，我们已经完成了大部分的工作。 ◆I found the lecture hard to follow because it had started when I arrived. 我发现这场讲座很难听懂，因为我到的时候讲座已经开始了。 (2)表示一个动作或状态在过去某一时刻之前就已开始，一直持续到过去的这一时刻，而且到那时还未结束，仍有可能再持续下去。 ◆I had been at the bus stop for 20 minutes when a bus finally came. 我在车站等了20分钟才来了辆公交车。 (3)hope，mean，want，think，expect，plan，intend等动词的过去完成时可以用来表示过去未曾实现的想法、希望、打算或意图，意为“本来……(但事实上并没有……)”。 ◆I had hoped to send Peter a gift to congratulate him on his marriage，but I couldn't manage it. 我本来计划在彼得结婚时送他一个礼物的，可是我没有做到。 (4)常用过去完成时的固定句型： ①在no sooner...than，hardly...when句型中，主句用过去完成时，从句用一般过去时，意为“一……就……；刚……就……”。 ◆ I had no sooner reached home than it began to rain.(＝No sooner had I reached home than it began to rain.) 我刚到家就开始下雨了。 ◆I had hardly stepped into the classroom when the bell rang.(＝Hardly had I stepped into the classroom when the bell rang.) 我一踏入教室的门，铃就响了。 [温馨提示]　当no sooner和hardly位于句首时，句子要部分倒装。 ②在“It was the first/second/...time＋that...”句型中，从句用过去完成时，意为“那是第几次……”。 ◆It was the first time that I had chatted online in English. 那是我第一次用英语在网上聊天。 ③在“It was＋一段时间＋since 从句”句型中，从句用过去完成时，意为“自……发生以来已经多长时间了”。 ◆It was at least three months since I had left Beijing. 我离开北京至少有3个月了。 ④在“主句＋by the time＋表示过去的从句”句型中，主句用过去完成时，意为“到……时，已经……”。 在“by the end of＋表示过去的时间”句型中，句子用过去完成时，意为“到……时，已经……”。 ◆By the time I got to the station，the train had already gone. 我到车站时，火车已经开走了。 ◆By the end of last term we had learnt about 500 English words. 到上学期期末为止，我们已经学了大约500个英语单词。 [即时演练1]——用所给动词的适当形式填空 (1)(2024·新课标Ⅰ卷)When I finally finished the essay，the thought of winning _________ (give) way to the enjoyment of writing. (2)(2025·全国一卷)Most famously，a Canadian journalist who _________(move) her family to Manhattan in the early 1950s led a campaign to stop the destruction of her local park. (3)I _________ (hope) to come to your party，but I was too busy. (4)It was the second time that Smith ___________ (visit) the Great Wall. (5)By the end of last year，Henry _____________ (collect) more than a thousand postcards. 二、过去完成时与一般过去时的区别 时态 用法 过去完 成时 过去完成时强调“过去的过去”，即表示在过去某一时间或某一动作之前完成的动作或存在的状态，是以过去某一时间为基准的 一般过 去时 一般过去时以现在时间为基准，表示在过去发生的动作或存在的状态，对现在没有影响 ◆I met her at the airport yesterday.I hadn't seen her for five years since she went abroad. 我昨天在机场遇到她了。自从她出国以来我已经五年没见过她了。 ◆He once worked on a farm for 10 years，and now he is the manager of the company. 他在农场工作过10年，现在是这家公司的经理。 [温馨提示]　当一个由before，after，as soon as等连词引导的从句所表示的动作和主句的动作紧接着发生时，两个动作均可用一般过去时来表示。 ◆We had breakfast after we did morning exercises. 做完早操后，我们吃早饭。 ◆The train started to move just before he reached the platform. 他到站台时火车刚要走。 ◆They started ploughing as soon as they got to the fields. 他们一到地里就开始耕地。 [即时演练2]——用所给动词的适当形式填空 (1)He __________ (work) on a ship for 8 years before he ______ (become) the captain of the ship. (2)Yesterday，Lucy's parents ______ (rush) her to the hospital after she fell off her bicycle. (3)When first coming to that city，my parents often had a chat with neighbours，just as they ________ (do) in our hometown. [核心词汇·练透] blame v.责怪，指责；把……归咎于 n.过失； 责备 (1)blame sb/sth for...　因……而责备某人/事 blame sth on sb　把某事归咎于某人 be to blame (for...)　(对……) 负责；(因为……)应受指责 (2)take/accept/bear the blame for...　为……承担责任 lay/put the blame/(for st) on...　把某事归咎于…… [教材原句]The extinction of the Pinta Island tortoise is blamed on humans. 平塔岛龟的灭绝归咎于人类。 [练通]——单句语法填空/ 完成句子 (1)I can't help but blame myself ___ the mistake，feeling a deep sense of guilt and regret.(续写佳句之心理描写) (2)Many scientists say we are now entering the Earth's sixth mass extinction.This time，human activity will be ________(blame). (3)不要总把你自己的失败归咎于他人，相反，花点时间反思自己的行为和决定。 Don't always _________________________ others；instead，take a moment to reflect on your own actions and decisions.(应用文之建议信) [温馨提示]　be to blame for sth意为“应为某事负责或受指责”，其中不定式用主动形式表示被动含义。 decline vi.减少；衰退；下降 vt.谢绝；婉拒 n.减少，下降，衰落，衰退 (1)decline to do sth　拒绝做某事 decline by/to　下降了/到…… (2)be in decline　在下降中，在衰退中 on the decline　在下坡路上；在衰退(减少) [教材原句]After goats in particular had been brought to the island，the Pinta Island tortoise population declined. 特别是当山羊被带上岛后，平塔岛陆龟的数量就下降了。 [练通]——单句语法填空/ 完成句子 (1)She declined _______ (have) lunch with her friend，saying that she wasn't feeling well. (2)The number of tourists to the scenic spot has declined __ 10% in recent years __ only 5 million because of the epidemic. (3)As the economy was ___ the decline，some people in the town had lost their jobs. (4)我只能谢绝你的邀请，因为我在忙于准备期末考试。 Occupied in preparing for my final exam，I ____________________ _________________________．(应用文之道歉信) [温馨提示]　表示“增加”或“减少”的幅度常用介词by；表示“增加到”或“减少到”常用介词to。 Ⅰ.用所给动词的适当形式填空 1．She was grateful for everything that the medical and nursing team ________ (do) for her. 2．Instead of getting down to a new task as I ____________ (expect)，he examined the previous work again. 3．By the time I turned on the TV，Messi __________ (score) two goals. 4．—Did you enjoy the party? —Yes.We ____________ (treat) well by our hosts. 5．Hardly had he begun to speak when the audience ___________ (interrupt) him. 6．By the end of last month，Jane __________ (raise) enough money for the poor sick boy. 7．I _____ (ask) you not to move my dictionary this morning—now I can't find it. 8．It was the second time that he __________ (rush) out of the classroom without permission. 9．Mr Smith __________ (work) in a car factory for ten years before he came to China. 10．—Hi，I'm Peter.Are you new here？I haven't seen you around. —Hello，Peter.I'm Bob.I just _______ (start) on Monday. Ⅱ.完成句子 1．这是我第一次参加英语演讲比赛。 It was the first time that I ____________________________________． 2．他担心他们发起的革命会失败。 He was afraid the revolution ___________________________． 3．她一走上舞台，观众就爆发出雷鸣般的掌声。 No sooner _______________ on the stage than the audience broke into thunderous applause. 4．他一直看着她，想知道以前是否在哪里见过她。 He kept looking at her，wondering _______________________ somewhere before. 5．到昨晚9点之前，我们已经收到了200多封观众的来信。 By nine o'clock last night，we __________________________________ from the audience. $